of worcester



Dec. l0, 1929. K. J. UNwlN 1,739,188

SIDE SLIP WEFT DETECTOR Filed May 25, 1927 IZ J0 JI J3 Hita/wey:

Patented Dec. 10, 1929 l gumrmsTAT-ES "oFFloE KENNETH Je UNWIN,.IOFAWORCLESTIE.IR., MASSAOHI'SETTS, SSIGNOR'TO CROMPTON & KNOWITES LOOMTORKS,l OF WORCESTER, MASSACHUSETTS, A CORPORATLVION OF MAssAonUsETTs a.y

Application filed May 23,

When detectors are ,applied to the usual form of multi-color magazinesitis customary to vconnecttli'e same with a controller pin which isnormally inthe path of anv actuatorv forth a weft detector formed of asingle piece of wirewhioh is npivoteddirectly t-o the controllerl pin.Inthat application aA pair of springs 'aresetiorth, one .acting directlyon the controllerl pin to movefthev same Vrearwardlyand the otherinterposed between the controller pin and the detector to hold the lat#ter in proper angular position lwith respect to its pivot so as tobeengaged by the advancing supplyY of weft. -Y In carryingoutthe'Frechett constrnc'tion it isnecessa'ry'toY employ a movingarm'secured to a roel; shaft around which lies a'torsion spring,-thes'evparts being customary in the form of feeler setiorth-in pat` entto 'Ryon, No. 972,722. It is an important object of my present inventionto retain all of the movements of the feeler set ferth in the forththerewith.

` .with these and other Objecten View which will appear as thedescription proceeds, my invention residesl in the combination and ar#InV copending application Ser. No. 190,091, liled by Frechett there isset 1927.v serial No. 193,420.

rangement of parts hereinafter described and set forthin thel claims. Y

,1 In the accompanying drawings wherein a convenient embodiment of myinvention is set fort-h5' Y Y Fig. 1 isa top plan view of my detectorcertain 'parts being-in section, the detector being shown in normalposition in dotted lines and in non-'indicating detecting position infull lines y L i Figg2 is an end elevation looking in the direction ofarrow 2, Fig. 1, certain parts being ink sectionrfor .the sake ofjclearness;

Fig.l 3y is a front elevation taken in the direction of arrow 3, Fig. 1;1 v y l Fig. 4is a view similar to Fig. 1 but showing the `position thedetector assumes when indicatingweftexhaustion; and,

Fig.,5 'is a detailed enlarged rsection on line 5`5 ofFig. 2.

Referring tothe drawingsl have 'shown a stand 10 provided witha-vertical slot 11 eX- ktending' substantially parallel yto the lengthfof the shuttle S' and have indicated anactuatorlever 12 the right endof which moves up and downin the slot 11. lA. hole 13 extendstransversely across the slot 11 and receives the rear-l endof acontroller pin 14 which under normal conditions lies under the actuatorllever 12.; So long as yweft is present in suiiicient quantitykthe'controller lpin 14 will be moved ifor-'wardlfyV from lunder thelever'i12 sov that the latt'erf will move downwardly withoutinterruption but when the weft is substantially exhausted appropriatemechanism will operate tovleave the controller pin 14 under the actuatorlever so that downwardmovement of 'they latter-isfinterrupted toinitiate replenishment. The matter thus far described is more fully.se-t '`v forth in patent to Ryon, No. 1,030,748, to'lwhich reference maybe had. A support 20 is provided with a horizontal slot 21tlhir'oughwhich extends a securing bolt A22, 'said bolt 'extending alsothrough a vertical slot`23 formedinthe foot 24 ofl a feeler bed 25'.lBy-means', of the bolt and' slots described Vvertical and horizontalladjustment of the feel''er'bedr'nay be obtained. f Q-"Said has'fstruckvupwardly therefrom 'a pair' ofguides`2'6 and'fsad' bed is further losprovided with a flange 27 receiving holes 28.

rlhe detector is preferably formed of a single piece of wire 30 havingthe rear end formed as indicated in Figs. l and 4 with weft engagingteeth 3l. Said detector eX- tends forwardly'under the guides 26 and onthe bed 25 and is bent as indicated in Fig. l to have a notch 32 and toextend laterally to the contro-ller pin 14 asat. The forward left endof' said detector isi'hent d'ownwardly7 as at 34 to extend through thecontroller pin and any convenient securing means. as a cot`YV ter pinmay be employed. l

lhile the function of the controller pin is the same as that. set forthin the aforesaid patent to Ryon yet it is given. a l irrnnrrrting unlikethat set forth inthe patent.` sup"- portingithe forward end of thecont'lOllel' l provide an upstanding arm 40 boltedas at 41 to thesupport 20 and provide Ysaid with a h 'ore through which the forwa@ endof the controller pin extends.Y l provide a sliding guide for thecontroller pin whereas in the patent previously mens: tioned and in theconstruction heretofore used the forward end of the controller pin hasheen held at the upper end' of a pivoted arm. ln order to limit rearwardmovement of the controller pin thread the forward end of the same as at42 and provide the saine with a pair of' lock nuts 45 the rear one ofwhich is adapted to engage the arm 40 to adliustahly limit rearwardmovement offthecontroller pin. In order that the moving parts previouslydescribed may he yieldingly Vheld normally in rearward position lprovide a single tension spring 50 the rear end of which is received byone or another of the holes l28 and the forward end of which is receivedhy the notch 32 of the detector. Said spring acts not only to hold thecontroller pin 14 yieldingly under the actuator lever `l2 hut also holdsthe detector 30 normally in the rearward dotted position shown in Fig,l. rllhe effect of said spring is to turn the detector around thedepending portion 34 as a pivot and this turning movement is limited bythe left end of one or the lother of the guides 26. As shown herein lhave indicated the rear guide as serving to .stop 4left hand movement ofthe detector although the for,- ward guide could perform the Samefunction or if desired both parts GQlllCl accomplish this result.

Under normal conditions the parte are in the dotted line position shownin 1 and when a sucent supply of ,weft is on the boh: bi1- 1 the partewill be moved forward-*1r to the full line position Sh-QWH in Said Fie?.1 the .action of Spf-ins 520.- Unler there cQllditions controller 14will move forwardly and the actuator- ;leverwill be depressed With.- outinterruption. 'lhen insufficient weft remains on the `hob'hin Blierrever, the detector wir wing .aber e@ entre am pivot to assume thefull line position shown in Fig. 4. Due to the action of spring 50 thedetector will not only move along the hohhin but the controller pin 14will remain in the path of the actuator lever 12 and downward movementof the latter will he interrupted to initiate replenishment.

Transfer mechanism indicated at T will move forwardly on the subsequentpick to engag'ethe arm 33. of' the detector and not only move thedetector out of the path. of the incoming hohbin but also move thecontroller pin 14 forwardly to prevent repetition of the indication.

Frein the foregoing it will he seen that l .have provided a very simpleside slip weft detector adaptable to multi-color magazines wherein the'detector is preferably located on the magazine side of the loom. Inwill he seen that the controller pin is adjustably limited in itsrearward movement and is formed with a pair of slide guides so that thesame moves in a fixed path and it will further he seen that the singlespring 50 serves the dual function of returning the detector to normalposition after hoth indicating and non-indi 'eating detecting movementsand also moves: the controller pin to its normal position under theactuator lever l2. l do not Wish to he limited to the particularmounting for the con- :i

troller pin as it 1s apparent that the con struction set forth is notthe onlyv means for holding the controller so that the same will notmolve to theright hut will move in a path substantially perpendicular tothe axis .of the shuttle so as to provide a pivot with the forward endof the detector such that the latterwill always he properly placed withrespect to the shuttle.

Having thus described my invention it will be apparent that changes andmodifications may vhe made therein hy those skilled in the art withoutdeparting from the spirit and `scope of the invention and l do not wishto be limited to the details herein disclosed, hut what claim is:

l. In a side slipping weft detector for a loom having a regularly movingactuator to initiate replenishment and a weft surface to be detected, acontroller' normally in the path of the actuator, a weft detectorpivoted directly to the controller and having a portion .offset from theYavis of the controller to engage the surface to be detected, and .asingle resilient means having one end fixed and the other Tf endattached to the `detector at a point lic-tween the pivotal connectionthereof on thc control `ler and the part to `engage the weft sui-fuftohe detected, ysaid controller and detector moving forwardly when weft ispresent against the action of the resilient means and said detectorsliding along the surface when *,sulostantially lexhausted to have apivotal -`n ioverne,nt with respect to the controller against the actionof the resilient means,

2. In a side slipping weft detector for a loom having a regularly movingactuator to i initiate replenishment and a weft surface to be detected,a controller normally lying in the path of movement of the actuator, adetector wire pivoted directly to the controller and having a rearwardlyextending portion offset from the pivotal connection to engage Y thesurface to be detected, and a single resilient means connected to thedetector exerting a yielding pressure on the detector to move the lattertoward the surface to be detected and also holding the controlleryieldingly in the path of the actuator, said detector and controllermoving forwardly against the action of the resilient means when weft ispresent and said detector moving laterally along and in contact with thesurface when the latter is substantially exhausted against the action ofthe resilient means, the resilient means acting to hold the controllerin the path of the actuator as the ldetector slides along a denudedsurface.

Y3. In a side slipping weft detector for a loom having a regularlymoving actuator to initiate replenishment and a weft surface to bedetected, a stand, a controller slidablyk mounted on the stand andhaving a portion normally inthe path of the actuator, a detector wirepivoted directly to the controller, and a single resilient elementconnected to the detector wire between the controller and the rearengaging end of said detector wire and acting to hold the detector andcontroller in normal rearward position and acting to return the detectorto normal position after side slipping movement, said detector when incontact withsulficient supply of weft moving forwardly to move thecontroller out of the path of the actuator andsaid resilient meansacting to hold the controller in the Apath of the actuator when thedetector slides along and in contact with the substantially exhausted,surface to be detected.

l. In a side slipping'weft detector fora loom having a regularly movingactuator to initiate replenishment and a weft surface to be detected, astand, a vcontroller guided in rthe stand and having one end normallyvin the path ofthe actuator, means carried by the controller to limitmovement thereof toward the actuator, a detector element/pivoteddirectly to the controller and having a rearwardly extending portionoffset from the controller to engage a surface to be detected, a singleresilient means connected to the Idetector wire between the controllerand the rear engaging end of said detector wire and acting on thedetector to move the same to normal rearward position, and to restorethe detector to normal position after angular movement, said yieldingmeans serving also to hold the controller normally in the path of theactuator, and a stopA acting to limit `the movement of both thecontroller and demounted on the stand and having one end to cooperatewith the actuator and the other end extending forwardly beyond thestand,

stop means carried by the forwardly extending end of the controller toengage the stand and limit rearward movement of the controller, adetector element formed of a piece of wire pivoted directly to thecontroller and having a rearwardly extending weft surface engagingportion oifset from the controller, and a single resilient means actingon the detector to hold the same yieldingly in rearward position and torestore the detector to normal position after angular movement, saidyielding means also holding the controller in operative relation withrespect to the actuator, the detector moving the controller forwardlyout of the path of the actuator when in contact with a sufficient supplyof weft and said yielding means holding the controller in the path ofthe actuator when the detector slides along a substantially exhaustedsupply of weft.

6. In a side slipping weft detector for a loom having a regularly movingactuator to initiate replenishment and a weft surface to be detected, acontroller normally lying in the path of the actuator, a detector wirepiv- X Vcontroller pin and the weft engaging surface of the detector,said spring exerting a pressure on the detector tending normally to holdthe latter in normal rearward position again st the stop and to restorethe detector to normal positionV after angular movement and said springalso holding the controller yieldingly in the path of Ythe actuator,said detector moving the controller out of the path of the actuatoragainst the actionA of a spring when suflicient weft is present and saidspring holding the controller in the path of the actuator when thedetector slides along a substantially exhausted supply of weft.

In testimony whereof I have hereunto affixed-my signature.

KENNETH J. UNWIN.

